baber/WOPTO huggingface dataset:
Patent GB-585576-A (GB)
Title: Improvements in or relating to the moulding of lenses, prisms and like optical elements from plastics
IPC: B29D11/00
Filed: 1943-09-06
Abstract: Before moulding, the blank is heated for a short time at the softening temperature to soften only the outer layer, whereby during moulding and cooling the interior of the blank remains solid and is not distorted.  The period of pre-heating may be 3 minutes, and the temperature 200 DEG C. for polystyrene and 250 DEG C. for polymethyl methacrylate.  The pre-heating may be carried out in an electrically-heated oven, or by means of the moulding dies themselves as described in Specification 572,748.  In an example, a blank is prepared by trepanning from a sheet a circular disc 3 per cent. less in diameter than the finished lens, and then so machined in a lathe with cutters that the radius of each convex surface is 3 per cent. less than that in the finished lens (and the radius of each concave surface is 3 per cent. greater than that in the finished lens).  The surfaces are given an optical finish and cleaned, and the blank is uniformly heated to 25 DEG C., pre-heated to soften the skin and moulded between heated dies. Specifications 416,398, [Group XX], and 556,743 also are referred to.
Patent GB-1186185-A (GB)
Title: Improvements relating to Electron Microscopes.
Inventor: ANDERSON KENNETH
IPC: H01J37/22
Filed: 1966-04-01
Abstract: 1,186,185. Electron microscopes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 28 March, 1967 [1 April, 1966], No. 14617/66. Heading H4F. [Also in Division H1] An electron microscope including a luminescent screen 3, is coupled by fibre optics 5 to an image intensifier 7 comprising an assembly of non-scanning cascaded electron amplifier stages with input and output screens 6, 8. The output image appears on the luminescent screen 8 which may be coupled by fibre optics to another luminescent screen scanned by a T.V. camera tube and viewed on a C.R.T. To reduce noise either of the luminescent screens including that of the C.R.T. may have a long delay phosphor. Alternatively a storage tube can be incorporated in the intensifier or placed between the camera and C.R.T.
Patent GB-1038406-A (GB)
Title: Surface treated preformed polyolefin materials and methods of producing them
IPC: D06M11/55
Filed: 1963-04-11
Abstract: Articles of solid polyolefins are rendered receptive to cationic dyes and cationic finishing agents by applying to their surface a dilute aqueous solution containing sulphuric acid and at least one polyalkylene oxide or polyoxyalkylene alcohol, ether or ester and/or compounds which can react together to produce sulphuric acid and a polyalkylene oxide or polyoxyalkylene alcohol, ether or ester and drying and heating the product below its melting point.  The said articles may be films, filaments, fabrics or other moulded or preformed articles of solid polyolefins.  The polyoxyalkylene material is preferably of the formula R-(OR1)n-OR11 (I) wherein R and R11 are hydrogen or alkyl, aryl and/or acyl radicals, R1 is an alkylene radical of 2-6 C and n is an integer of 2 to about 1000, with R, R1 and n being chosen to provide a substance (I) having a solubility of at least 1 part in 1000 parts of water at 20 DEG C. Typically R is H and R11 is H or a 2-18 C alkyl, aryl or acyl radical.  The acid treating solution may be applied by impregnation, spraying, coating or contact with a liquid bath. The article may then desirably be washed or scoured, dried and then heated at a temperature between 100 DEG C. and 10 DEG C. below its melting point for 1-120 minutes.  A number of types of cationic finishing agents are listed which may be applied to the treated articles while in the vapour or liquid form including solutions in organic solvents, aqueous dispersions or emulsions, as a component of a molten bath or from solubilizing systems using salts or other compounds which yield the cationic agent during the treatment.  Examples are given in which treated polypropylene fibre fabrics are dyed with known cationic dyes, are treated with a cationic softening agent and a water- and oil-repelling agent and in which such a treated fabric is further treated with trisaziridinyl phosphine oxide, heated and dyed with an acid dye, a direct dye and a reactive dye.  The water repelling agent may be perfluoro-octanoic acid.
Patent GB-795160-A (GB)
Title: Improvements in or relating to methods of passivating silver
IPC: C23C22/24
Filed: 1956-05-11
Abstract: 795,160. Passivating silver. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 11, 1956 [May 14, 1955], No. 14721/56. Class 82(2) Silver is passivated, i.e. rendered resistant to attack by sulphur compounds, by treatment with an aqueous solution of an oxygen compound of hexavalent chromium containing a compound which, at the pH of the solution, removes silver ions by fanning silver complexes, the concentration of the remaining silver ions at said pH being defined by a point below the line AB of the graph. Potassium chromate is used as the chromium compound: examples of the complex-forming compound are sodium cyanide, ammonium hydroxide, sodium thiosulphate, potassium rhodanide, piperidine, sodium ethylene diamine tetraacetic acid, and potassium iodide. The solution may be applied by spraying or immersion. U.S.A. Specification 1,995,225 is referred to
Patent GB-737138-A (GB)
Title: An improvement in and relating to the means of safeguarding those workmen engaged inthe operation of machine-boring into rock, coal or the like solid matter from the dangers of dust
IPC: E21B21/00
Filed: 1953-05-28
Abstract: 737,138. Drilling-machine details. THOMAS, W. J. Feb. 1, 1954 [May 28, 1953], No. 14849/53. Class 83 (3). A device for surrounding a mining &c. drill to trap dust comprises a rubber or like mouthpiece e which is pressed against the surface to be drilled by at least one telescopic tube i, the dust passing into a container n supported from a rod b above the drill, the rod also supporting the mouthpiece. The device is supported on the drilling machine by a bracket having a screwed connecting piece a. The rod b slides in a sleeve a<SP>1</SP> on the bracket and carries a number of slings o to support the telescopic tubes i, sealed by plates h. To mount the device, it is passed over the drill and the container n is secured around the machine at the rear by press-studs on a collar n<SP>1</SP>. The front is closed by a sleeve n<SP>2</SP> tightened around the mouthpiece e by tapes n<SP>3</SP>, n<SP>4</SP>. Compressed air is then admitted to the tubes thus pressing the mouthpiece e against the working face and enclosing the drilling machine. The container is emptied by untying a knot at the lower end of the container n. If the drill rod is hollow, compressed air may be diverted through the connection a to blow dust from the bore-hole into the container.
Patent GB-1376463-A (GB)
Title: Methods and apparatus for lasting shoe uppers
IPC: A43D21/12
Filed: 1972-03-30
Abstract: 1376463 Boots &c CENTRE TECHNIQUE DU CUIR 30 March 1972 [6 April 1971] 14933/72 Heading A3B In a method of shoe manufacture, the toe end of the upper is lasted by clamping a blank across a die, forcing the toe end of a making last into the die, releasing the clamping forces and wiping and securing the lasting margins to the insole. The back part of the upper may be shaped between the last and a die. Apparatus for carrying out the method comprises a last 14, preferably of the type described in U.K. Specification 1,299,113, which is mounted by means of rods 9, 10 on an adjustable base 5. Beneath the toe end of the last is a die 15 over which an upper blank 30 can be clamped by clamping jacks 18 and to which is attached a jack 20 for operating the wipers 22. A further jack 19 is positioned above the toe end of the last to urge it down into the die 15. At the back part of the last is positioned a die 23 which is urged against the upper on the last by a jack 25. Wipers 27 are also provided.
Patent GB-514963-A (GB)
Title: Flushing cisterns for rinsing with different amounts of water
IPC: E03D1/14
Filed: 1938-05-19
Abstract: 514,963. Water-waste-preventers. MEDEK, L. May 19, 1938, No. 14945. [Class 26] In a flushing cistern having a combined valve and siphon discharge, the syphon G has an air inlet K so that the siphonic action is broken to give a partial discharge, complete discharge being effected by an additional or continued opening of the valve D. The air inlet may consist of a hole or a curved. pipe H the level of the lower end of which can be adjusted by turning the pipe to an oblique position relative to the siphon. In a modification the level of the air inlet is adjusted by a sliding or screw threaded extension of the pipe, the lower end of which is bevelled to prevent noise. Specifications 1058/95, 26494/96, [both in Class 26], and 421.151 are referred to.
Patent GB-593619-A (GB)
Title: Improvements in or relating to electrically operated timing arrangements
IPC: H04M3/12
Filed: 1945-06-13
Abstract: 593,619. Counting-apparatus. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and BAKER, G. T. June 13,1945, Nos. 14947 and 17527. [Class 106 (i)] [Also in Group XXXIX] In an electrical timing arrangement suitable for measuring the duration of a telephone call, the wipers of a rotary switch, stepped at constant speed, in passing over a particular position connect with a group of relays operable in characteristic combinations to register different values of a numerical digit, the setting of these relays being then transferred to a group of common relays which thereupon controls the setting of the first relays to register the next higher value of the digit. Preferably, multiple relays of the type described in Specification 591,655, [Group XXXVII], each of which comprises four units operable independently, are used. Each digit, representing tenths of minutes, minutes and tens of minutes is dealt with by agroup of four relays MWMZ (Fig. 1) which are controlled over the leads W-Z, after earth has been connected up by the B relay contact of the individual equipment. The uniselector D (Fig. 2) is stepped by interaction between DM and relay P at a speed of one revolution in six seconds. Timing up to 100 minutes, Figs. 1, 2, 3. Since each circuit will require three bank contacts, a 25-point uniselector serves eight circuits. Timing for a circuit is initiated. by the connection of earth to lead D (Fig. 3) by relay D of the individual equipment (not shown) on the reply of the called party. When wiper D5 next reaches position 1, relays D, P and PR pull up, followed by MW, thus registering the digit 1 according to the code at the bottom of Fig. 2. Relays D, P and PR fall away and the switch continues stepping. In position 4, the wipers are connected to the next circuit and, if timing is required, earth on the D lead will cause similar operation. When the switch again reaches position 1, P, D and PR pull up as before, battery provided by MW brings up W, MW is. shunted down and MX brought up in its place. Operation continues in this way and MW-MZ are operated in turn as indicated in the table. After 9 has been registered (MY, MZ up), Y and Z pull up, MY, MZ are shunted down and MW-MZ register O. Furthermore, AT pulls up and when the wipers step to position 2, AT stays up and holds D so that PR operates and one is added to the registration of the minutes relay group connected to leads 2MR. Similarly, after 9.9 minutes, AT holds in position 3 and one. is added to the registration of the tens of minutes relay group. On release of the circuit, removal of earth by relay B causes all operated relays to fall away. Other modifications (Figs. 4-7, 12, 13, not shown) provide facilities peculiar to telephone call timing such as re-metering at 3-minute intervals and breakdown of connection after 9 minutes. Specification 591,680 also is'referred to.
Patent GB-1375567-A (GB)
IPC: B60Q11/00
Filed: 1971-05-14
Abstract: 1375567 Vehicle lighting systems JOSEPH LUCAS (INDUSTRIES) Ltd 28 March 1972 [14 May 1971] 15035/71 Heading H2H A vehicle lighting system which comprises main beam and dipped beam headlamps is provided with means whereby should either the main beam or dipped beam filaments fail in use the dipped or main beam filaments are substituted therefore, at least the main beam filaments being reduced in intensity when substituted for the dipped beam filaments. A vehicle lighting system includes main beam headlamps 27, 39 and dipped beam headlamps 31, 43 energized from a battery 11 by way of a lighting switch 12, 13, 14 by means of a dip switch 17, a lamp 15 indicating when the headlamps are illuminated. The main beam headlamp 27 is energized from the battery 11 by way of contact 14 of the lighting switch, contacts 19a, 21 of relay 19, relay winding 25 and fuse 26, the current flowing in winding 25 causing contacts 32 to open thus preventing energization of dipped beam headlamp 31. Should the main beam headlamp 27 fail the relay winding 25 de-energizes, contacts 32 close and the dipped beam filament 31 is illuminated by way of a diode 36 and contacts 32. If it is desired that under these conditions the dipped beam has a reduced intensity a resistor may be placed in series with the diode 36. The operation of headlamps 39, 43 is similar. Dipped headlamp is selected by movement of the dip switch 17 to contact 18 whereupon relay winding 19 energizes to change over contacts 19a, 19b. Dipped beam filament 31 is then energized by way of contacts 19a, 23, relay winding 28 and fuse 29, the current flowing in winding 28 causing contacts 32 to open to prevent illumination of main beam headlamp 27. Failure of dipped beam headlamp 31 causes deenergization of relay winding 28 and contacts 32 close to illuminate main beam headlamp 27 by way of contacts 32 and a resistor 34, the resistor 34 causing the intensity of the headlamp to be reduced to a greater extent than the reduction in the intensity of the dipped beam headlamp when this is reduced by the provision of a resistor. Under these conditions the current flowing in the relay winding 28 is insufficient to cause the contacts 32 to open. Operation of headlamps 39, 43 is similar. Lamps 35, 45 serve to indicate failure of a headlamp, the contacts 33, 45 being operable by the relays 25, 28 and 37, 41 respectively. In a second embodiment the system is provided with means whereby operation is possible without the use of a relay operated by the dip switch and in a third embodiment, lamps are provided to indicate individual failure of the headlamps.
Patent GB-127175-A (GB)
Title: Improvements in Pen Nibs.
Inventor: MARNER GEORGE WILLIAM
IPC: B43K1/02
Filed: 1918-09-16
Abstract: 127,175. Marner, G. W. Sept. 6, 1918. Pens. - A pen-nib of the kind having a writing-point at each end and a stop midway between the points, for limiting the distance to which the nib can be pushed into the holder, is made with the stop in the form of an annular bead c.
Patent GB-1148604-A (GB)
Title: Improvements in or relating to shielded casks for fuelling nuclear reactors
IPC: G21C19/32
Filed: 1966-04-05
Abstract: 1,148,604. Grabs for nuclear fuel elements. GULF GENERAL ATOMIC Inc. 5 April, 1966 [9 April, 1965], No. 15046/66. Heading B8H. [Also in Division G6] A grab for use in a nuclear reactor for handling fuel elements 54 with an external lip 54a and also for handling control rod guide tubes 53 having an internal lip 53a comprises a housing 378 pivotally supporting at 398 three fuel element engaging arms 396 and pivotally supporting at 399 three control rod guide tube engaging arms 397. The arms 396, 397 have non-linear slots 403, 407, respectively, receiving pins 395, 394 carried by a slidable block 393 connected to an actuator element 392. Thus when the block 393 moves downwards relatively to the housing 378 the arms 396 are opened and the arms 397 are closed, upward movement of the block reversing these operations.
Patent GB-370708-A (GB)
Title: Improvements relating to apparatus utilising the reflection of light for converting sound records or the like into electric current variations
IPC: H04L23/00
Filed: 1931-05-21
Abstract: 370,708. Optical sound-reproducing apparatus. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Kellogg, E. W. ; 17, S. Colonial Avenue, Moorestown, New Jersey, U.S.A.) May 21, 1931, No. 15052. Convention date, May 22, 1930. [Class 40 (ii).] Relates to apparatus for converting variations in light reflected from successive elements of a surface into electrical variations, the invention being particularly intended for reproducing sound from a record, but also being applicable to other devices, such as scanning systems for facsimile transmitters. According to the invention, the varying light reflected from the sound record 2 or the like is received in a casing 9 which encloses a portion 10 of the optical system, the casing having its interior surface coated with a diffusely reflecting substance such as magnesium carbonate, and a photo-electric cell 7 being so arranged within the casing that a high percentage of the light reflected from the record affects the cell. In the construction shown, a light beam is projected upon the record by an optical system 5. This has a tapered end portion 10, which, like the interior of the casing 9, has a highly reflecting white coating, and which extends into the casing in line with a slit 11 past which the record moves. The light-sensitive cathode preferably subtends.a large angle from the record. The Specification as open to inspection under Sect. 91 (3) (a) states also that the photoelectric cell may be mounted outside the casing, with its window at an opening in the casing. This subject-matter does not appear in the Specification as accepted.
Patent GB-238659-A (GB)
Title: Improvements in the preparation of cellulose fibres and other products of industrial value from industrial waste products
IPC: D21C5/00
Filed: 1924-06-23
Abstract: In a process for treating banana stems to obtain cellulose fibres suitable for paper making, as a surgical absorbent, and as raw material for the manufacture of artificial silk, the stems, preferably crushed to reduce the percentage of contained water, are boiled for 3-4 hours at atmospheric pressure in a 1/2 normal solution of caustic alkali.  A revolving boiler is used having fixed blunt teeth on its inner surface.  After boiling, the fibre is washed with water, and treated with hypochlorite of lime of 2 DEG  Tw. for 1-1 1/2 hours when pure white cellulose is obtained.  The liquor withdrawn is treated with calcium chloride to precipitate the extracted colouring matter, resins &c., cauticized by boiling with lime in known manner, and may be used repeatedly, when the potash salts extracted from the stems will gradually accumulate and may be extracted in known manner.
Patent GB-1294534-A (GB)
Title: A device for checking the pitch diameter of a screw thread
Inventor: ROZOVSKY MAX SOLOMONOVICH
IPC: G01B3/48
Filed: 1970-03-31
Abstract: 1294534 Determining pitch diameters NAUCHNO-ISSLEDOVATELSKY INSTITUT TEKHNOLOGII TRAKTORNOGO I SELSKOKHOZYAISTVENNOGO MASCHINOSTROENIA. 31 March 1970 15070/70 Heading G1M A device for checking pitch diameter of a thread against a standard includes a holder 1 with a master thread 2, passages 4 in the holder diametrically of the master thread but terminating radially short of the crests 12 so as to open on to the flanks of the threads within a specific axial length, shutters 6 which are movable transverse to the axis of the master thread to engage in use the crests of the thread being measured, means for passing a fluid medium under pressure through said diametrically arranged passages, means for discharging fluid from between workpiece and the master threads and means for measuring a parameter of fluid medium passing through the device, the value of which depends on the amount of clearance between the flanks of the master thread and the thread being checked. Master thread 2 is provided with openings 10 within which are inserts 5 threaded to match the master thread 2 but inset from the master thread. Passage 3, connected to a pneumatic gauging system, leads via slots 4 in inserts 5 to rectangular openings on the flanks of the threads, the crests of the threads 12 being left intact. Grooves 8 are provided in the master thread to permit escape of gauging fluid. Shutters 6 are biased outwardly by springs 14 to contact in use the crests of the thread being gauged adjacent the openings in inserts 5. In use the member being measured is threaded on to the master, the clearance between the fluid openings and the threaded member determining a back pressure in the gauging system which is read directly as a diameter. An apparatus for determining the pitch diameters of externally threaded members Figs. 5, 6 (not shown) includes pneumatic means for lifting the shutters away from the workpiece whilst it is being screwed to the gauging position.
Patent GB-515018-A (GB)
Title: Improvements in or relating to gas-heated grillers
IPC: A47J37/06
Filed: 1938-05-20
Abstract: 515,018. Grilling-stoves. MAIN, LTD., R. & A., and ADAM, 'A. J. May 20, 1938, No. 15146. [Class 126] A grilling unit heated on its underside by a horizontal burner tube 10 with burner orifices 11 along each side, comprises an arch-shaped cast-metal cover-plate 13, apertured along the crown of the,arch, and a perforated metal fret 19 secured to and spaced away from the underside of the cover-plate 13. The fret may be of heat-resisting sheet metal. The metal 16 of the cover-plate between and at the ends of the apertures along the crown may be bowed upwardly and ribbed, and additional holes may be provided in the cover-plate, either near its horizontal edges only or distributed over the greater part of its surface. The cover-plate rests on cross-pieces 12 at the ends of the burner tube. Two separate frets 19 may, as shown, be arranged one on each side of the burner. The fret or frets may be supported by the engagement of flanges 23 thereon with the edges of the apertures along the crown of the cover-plate, and by screws 20 and nuts 26.
Patent GB-790062-A (GB)
Title: Improvements relating to infants' napkins
IPC: A41B13/04
Filed: 1955-05-26
Abstract: 790,062. Infants napkins. MERICA, M. Aug. 3, 1956 [May 26, 1955], No. 15176/55. Class 141 A protector for use with infants' napkins comprises a flexible impervious sheet having a set of inwardly folded parts adapted to overlie the edges of a napkin and to provide, together with a second set of inwardly folded parts a double trough formation. In one form. Figs. 1 and 2 a hem D is upturned around all four edges of the sheet A to form a continuous trough F for receiving the edges of a napkin G, and two inwardly folded pleats B provided a second trough formation K. A further set of pleats B<SP>1</SP> may also be provided. Tucks may be formed in the longer hems D, and the pleats B, B<SP>1</SP> may be inwardly curved. Eyelets H or' end tabs are provided for securing the protector to an outer covering; alternatively ,tapes may be attached to the corners for tying the protector around the infant's waist. In a modification, Fig. 3, the protector has press studs L and elastic portions M for fitting it around the infant; the outer hem D is omitted, the double trough K, K' being formed by the pleats B, B<SP>1</SP>. In both forms, the pleats B, B<SP>1</SP> may extend transversely of the sheet instead of lengthwise as shown. The Provisional Specification describes also protectors having no medial trough, but only a single or double peripheral trough.